Thermal protection arrangement for solid disk glass cooktop

Details Thermal protection arrangement for solid disk glass cooktop Thermal protection arrangement for solid disk glass cooktop

1986-12-04

1988-07-05

Pellinen, A. D.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219458, 219451, 219464, 219445, H05B 368

Patent

active

047556552

ABSTRACT:
A solid disk surface unit mounted in a glass or ceramic support surface, comprising a plate member of cast material with one or more resistive heating elements mounted to the underside thereof and a thermally conductive cover member enclosing the underside of the plate member with its peripheral edge in close thermal contact with the plate member near its periphery, is provided with a thermally responsive switching device thermally coupled to the cover member and adapted to respond to the surface temperature of the cover member at a point relatively remote from its peripheral edge. The switching device is operative to remove power from the resistive heating elements of the surface unit when the sensed cover member temperature exceeds a predetermined threshold temperature, thereby protecting the glass support surface from damage due to thermal stresses resulting from hot spots occurring near the periphery of the surface of the plate member.

REFERENCES:
patent: 3612826 (1971-10-01), Deaton
patent: 3622754 (1971-11-01), Hurko
patent: 3624352 (1971-11-01), Deaton et al.
patent: 4122330 (1978-10-01), Fischer et al.
patent: 4350875 (1982-09-01), McWilliams
patent: 4388520 (1983-06-01), McWilliams
patent: 4394564 (1983-07-01), Dills
patent: 4491722 (1985-01-01), Fischer et al.
patent: 4554438 (1985-11-01), Schreder
patent: 4680452 (1987-07-01), Fischer et al.

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